Selection of 82°30'E as the Standard Meridian of India
India, being a vast country, required a standard meridian to be chosen for various administrative and time-keeping purposes. The selection of 82°30'E as the standard meridian of India was based on several factors.

Geographical Center
- 82°30'E longitude passes through the center of India geographically, making it an ideal choice as the standard meridian.
- It divides India into two almost equal halves in terms of land area.

Time Zone Consideration
- India follows the Indian Standard Time (IST) which is based on the 82°30'E meridian.
- This helps in maintaining a uniform time across the country, which is crucial for communication, transportation, and coordination.

Historical Significance
- The 82°30'E longitude was used as the reference point for Indian astronomers and mathematicians in ancient times.
- This historical significance played a role in the selection of this meridian as the standard for India.

International Standard
- The 82°30'E meridian also aligns with the Coordinated Universal Time (UTC) by adding 5 hours and 30 minutes to it.
- This synchronization with the international standard makes it convenient for global interactions.

Conclusion
The selection of 82°30'E as the standard meridian of India was a well-thought-out decision based on geographical, time zone, historical, and international considerations. It has served India well in maintaining uniformity and coordination across the country.